Work with CodeAnalysis (FxCop, ..)

[Joelius300]

I think, in general, it would be a great idea to add Microsoft.CodeAnalysis.Analyzers and Microsoft.CodeAnalysis.FxCopAnalyzers to get some support for best practices etc.

However, currently there are some horrible inconsistencies, bad practices and other (style-)issues which won't be fixed until we rework those charts. This means that these analyzers are going to complain all the time and the project will be flooded with (even more) warnings.

Do we want that?
In other words, when do we want to add those analyzers?

Discussions are welcome below.

CC @SeppPenner

[SeppPenner]

I guess we should add this after most of the rework is done.